Devi Bagala is definitely the deity of Bagalamukhi Mantra. She is also known as 'Valgamukhi'. 'Bagala' or 'Vagla' literally indicates a 'rope' or perhaps a 'bridle' – which is set during the mouth to manage the actions of tongue - and 'mukhi' signifies 'faced'. She may be the super energy https://www.youtube.com/watch?v=CQDKEh9UjJA